North America Native Plant

Neneleau

Botanical name: Rhus sandwicensis

USDA symbol: RHSA2

Life cycle: perennial

Habit: tree

Native status: Native to Hawaii  

Synonyms: Rhus chinensis Mill. var. sandwicensis (A. Gray) O. Deg. & Greenw. (RHCHS2)   

Neneleau: Hawaii’s Native Sumac Tree Worth Growing If you’re looking to add authentic Hawaiian character to your garden while supporting native biodiversity, meet neneleau (Rhus sandwicensis) – a charming indigenous tree that’s been gracing the Hawaiian Islands long before any of us arrived. Also known as neleau, this native sumac ...

Rare plant alert!

Region: Conservation status by state

Status: S2S3: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Neneleau: Hawaii’s Native Sumac Tree Worth Growing

If you’re looking to add authentic Hawaiian character to your garden while supporting native biodiversity, meet neneleau (Rhus sandwicensis) – a charming indigenous tree that’s been gracing the Hawaiian Islands long before any of us arrived. Also known as neleau, this native sumac brings both cultural significance and natural beauty to island landscapes.

A True Hawaiian Native

Neneleau is endemic to Hawaii, meaning it grows naturally nowhere else on Earth. This perennial tree species has deep roots in Hawaiian ecology and culture, making it a meaningful choice for gardeners who want to cultivate plants with genuine island heritage. You’ll find it naturally occurring across the Hawaiian Islands, typically in drier forest areas.

What Does Neneleau Look Like?

Don’t expect a towering giant – neneleau is more of a modest, well-mannered tree that typically grows 13-16 feet tall, though it can sometimes stay shorter depending on growing conditions. As a member of the sumac family, it features compound leaves that create an attractive, somewhat delicate canopy. The tree develops a single trunk (though environmental stress might occasionally cause multi-stemming), giving it a classic tree form that works well in various landscape settings.

Why Gardeners Should Consider Neneleau

Here’s where things get interesting – and important. Neneleau carries a conservation status of S2S3, which means it’s somewhat rare and could use our help. By growing this native tree, you’re not just beautifying your landscape; you’re actively participating in conservation efforts.

The benefits of adding neneleau to your garden include:

  • Supporting native Hawaiian biodiversity
  • Creating habitat for native insects and pollinators
  • Adding authentic cultural and ecological value to your landscape
  • Enjoying a tree that’s perfectly adapted to Hawaiian growing conditions

Where Neneleau Thrives in Your Garden

Neneleau is classified as facultative upland, meaning it usually prefers non-wetland conditions but can tolerate some moisture. This makes it quite versatile for Hawaiian gardens. It’s particularly well-suited for:

  • Native Hawaiian plant gardens
  • Restoration landscape projects
  • Dry forest recreation areas
  • Cultural or educational landscapes

Growing Conditions and Care

The good news? Neneleau is relatively low-maintenance once established. This tree thrives in USDA hardiness zones 10-11, making it perfect for Hawaii’s tropical and subtropical climate.

For best results, provide:

  • Well-draining soil (it doesn’t like wet feet)
  • Full sun to partial shade
  • Protection from strong winds when young
  • Minimal watering once established – it’s quite drought tolerant

Important Note About Sourcing

Given neneleau’s conservation status, it’s crucial to source your plants responsibly. Only purchase from reputable native plant nurseries that propagate from legally and ethically collected seeds or cuttings. Never collect plants from the wild – this can harm already vulnerable populations.

The Bottom Line

Neneleau offers Hawaiian gardeners a wonderful opportunity to grow something truly special – a native tree that connects your landscape to the islands’ natural heritage while supporting conservation efforts. While it may not be the showiest tree in your garden, its quiet beauty and ecological importance make it a worthy addition to any Hawaiian landscape focused on native plants.

Just remember: with rarity comes responsibility. Choose your source carefully, and you’ll be rewarded with a piece of authentic Hawaiian nature that future generations will thank you for preserving.

Neneleau

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Sapindales

Family

Anacardiaceae R. Br. - Sumac family

Genus

Rhus L. - sumac

Species

Rhus sandwicensis A. Gray - neneleau

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA